From owner-freebsd-net@FreeBSD.ORG Fri Jun 20 04:09:02 2014 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id EBD5867C for ; Fri, 20 Jun 2014 04:09:02 +0000 (UTC) Received: from mail.allbsd.org (gatekeeper.allbsd.org [IPv6:2001:2f0:104:e001::32]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.allbsd.org", Issuer "RapidSSL CA" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 69DF52E95 for ; Fri, 20 Jun 2014 04:09:02 +0000 (UTC) Received: from alph.d.allbsd.org ([IPv6:2001:2f0:104:e010:862b:2bff:febc:8956]) (authenticated bits=56) by mail.allbsd.org (8.14.8/8.14.8) with ESMTP id s5K48ijK016375 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Fri, 20 Jun 2014 13:08:54 +0900 (JST) (envelope-from hrs@FreeBSD.org) Received: from localhost (localhost [IPv6:::1]) (authenticated bits=0) by alph.d.allbsd.org (8.14.8/8.14.8) with ESMTP id s5K48hKl074487; Fri, 20 Jun 2014 13:08:44 +0900 (JST) (envelope-from hrs@FreeBSD.org) Date: Fri, 20 Jun 2014 13:08:12 +0900 (JST) Message-Id: <20140620.130812.1612764660960146940.hrs@allbsd.org> To: ler@lerctr.org Subject: Re: IPv6: "xxx::x already configured" in logs... why? From: Hiroki Sato In-Reply-To: <20140619140801.GA65420@thebighonker.lerctr.org> References: <20140612202349.GA65079@thebighonker.lerctr.org> <20140619.181129.1279477227287764712.hrs@allbsd.org> <20140619140801.GA65420@thebighonker.lerctr.org> X-PGPkey-fingerprint: BDB3 443F A5DD B3D0 A530 FFD7 4F2C D3D8 2793 CF2D X-Mailer: Mew version 6.5 on Emacs 24.3 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Multipart/Signed; protocol="application/pgp-signature"; micalg=pgp-sha1; boundary="--Security_Multipart(Fri_Jun_20_13_08_12_2014_519)--" Content-Transfer-Encoding: 7bit X-Virus-Scanned: clamav-milter 0.97.4 at gatekeeper.allbsd.org X-Virus-Status: Clean X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (mail.allbsd.org [IPv6:2001:2f0:104:e001::32]); Fri, 20 Jun 2014 13:08:56 +0900 (JST) X-Spam-Status: No, score=-97.9 required=13.0 tests=CONTENT_TYPE_PRESENT, RDNS_NONE,SPF_SOFTFAIL,USER_IN_WHITELIST autolearn=no version=3.3.2 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on gatekeeper.allbsd.org Cc: freebsd-net@freebsd.org X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 Jun 2014 04:09:03 -0000 ----Security_Multipart(Fri_Jun_20_13_08_12_2014_519)-- Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Larry Rosenman wrote in <20140619140801.GA65420@thebighonker.lerctr.org>: le> > le> Ideas? (I may be an idiot, so any criticism welcomed). le> > le> le> > le> if you need the 1841's config, I can supply that as well. It's using a Hurricane le> > le> electric Tunnel. le> > le> > How frequent were the log message added into /var/log/messages? And le> > when did it start to happen after boot. Just after lagg0 is le> > configured? le> > le> > -- Hiroki le> Looks like: le> le> Jun 12 07:00:01 thebighonker kernel: in6_ifadd: 2001:470:1f0f:3ad:223:7dff:fe9e:6e8a is already configured Thank you. Three more questions: 1. output of "ifconfig lagg0", "ifconfig bce0", and "ifconfig bce1". 2. output of "netstat -s -i". 3. output of "ndp -p". The cause of the message is that the automatically-configured address is not recognized as "configured" one and FreeBSD IPv6 stack is trying to add it every time a Router Advertisement message is received. I am still not sure why it happened, but the above three would help for further investigation. -- Hiroki ----Security_Multipart(Fri_Jun_20_13_08_12_2014_519)-- Content-Type: application/pgp-signature Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEABECAAYFAlOjs6wACgkQTyzT2CeTzy1PCgCgu0ik8r+qWFPcYnPimpgFCsk3 Y1oAnRn0prWi32YIc+uR3y2QLOy3sguJ =nnzI -----END PGP SIGNATURE----- ----Security_Multipart(Fri_Jun_20_13_08_12_2014_519)----